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II. MACRO- AND STRUCTURAL CHANGES IN THE EUROPEAN ECONOMY, ca. 1290 - 1520

II. MACRO- AND STRUCTURAL CHANGES IN THE EUROPEAN ECONOMY, ca. 1290 - 1520. The Dynamics of Population Changes in Western Europe, ca. 1000 CE – ca. 1500 CE. Demography and Macro-Economics. (1) Robert Lopez: ‘Population and Prices are the twin pillars of economic history’

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II. MACRO- AND STRUCTURAL CHANGES IN THE EUROPEAN ECONOMY, ca. 1290 - 1520

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  1. II. MACRO- AND STRUCTURAL CHANGES IN THE EUROPEAN ECONOMY, ca. 1290 - 1520 The Dynamics of Population Changes in Western Europe, ca. 1000 CE – ca. 1500 CE

  2. Demography and Macro-Economics • (1) Robert Lopez: ‘Population and Prices are the twin pillars of economic history’ • (2) Our examination of macro-economic changesin both semesters necessarily involves three components: • POPULATION, • MONEY, AND • PRICES

  3. Prices in Medieval Europe • (3) Price Changes: in terms of • a) monetaryfactors: stocks and flows of money on the form of coin and also credit • b) real factors: demography, technology, overseas explorations, settlements, etc. • (4) Distinction between NOMINAL and REAL PRICES or RELATIVE PRICES: i.e., the price of one good relative to prices of other good

  4. Prices: Nominal and Real 1 • (1) Nominal Prices and the Price Level • a) prices indicated in nominal money of account: in modern terms: in current dollars (or pounds) • b) prices measured in terms of the Consumer Price Index, in index numbers: Composite Price Index • (here: with a base period of 1451-75 = 100) • c) Movement of Nominal Prices and Nominal Wages: in terms of INFLATION & DEFLATION, also expressed in index numbers

  5. Prices: Nominal and Real 2 • (2) Real or Relative Prices and Wages • (a) REAL PRICES: price changes of Good X (wheat) relative to changes in the price of Good Y (bricks): • b) or relative to changes in the CPIdeflated prices • c) REAL WAGES: Nominal Wage Index divided by the Consumer Price Index: • RWI = NWI/CPI, expressing what the nominal money wage in silver would buy in good & services

  6. The Phelps Brown CPI and Real Wages in England, 1264-1954

  7. English Price Indexes: 1266-1520

  8. English Prices: 1501 - 1770

  9. Changing Population of Medieval and Early Modern Europe • What do we know about levels of population and change in population in medieval and early modern Europe? • Before 1600, we can deal only with estimates • The following are the best that we have • We next want to relate these changes in population to changes in the price levels, and to changes in economic growth (or contraction)

  10. Population Movements in Europe, 1000 - 1800

  11. Population Graph: 1300 - 1800

  12. England’s Population 1541 - 1741

  13. Demography & the Economy 1 • Population Growth or Decline affects both: • a) aggregate demand: in terms of total factor incomes in society – but that depends on • i) percentage of adult population with means of payment: for monetized aggregate demand • ii) age structure (pyramid) of the population: ratio between producers (adults) and consumers • b) aggregate supply: in terms of the factors of production, three of which grow or contract with population changes

  14. Demography and the Economy 2 • The Fundamental Questions to be asked: • 1) What were the causes of population growth? • a) as the consequence of economic growth? • -- thus endogenous factors: built into the economy • b) or: consequences of independent variables, especially biological: e.g., pathogens & diseases, as exogenous factors

  15. Demography & the Economy 3 • 2) What were the consequences of population growth: positive or negative? • a) was economic growth itself generally the positive consequence of population growth? • b) or did population growth (at times) lead to subsistence crises, economic crises, and demographic crises? • c) For subsistence crises, we must now turn to the famous Law of Diminishing Returns, in terms of the basic factors of production (as follows).

  16. Population, Wages, Prices in England, 1541 – 1913 (Lindert) RWI = NWI/CPI

  17. Factors of Production, Diminishing Returns, and Population

  18. Law of Diminishing Returns: with population growth

  19. Classical Economists on Population Growth • (1) Robert Thomas Malthus (1766-1834): Essay on the Principle of Population (1798) • a) that population tends to grow exponentially (geometrically) – If left unchecked • b) but output – food supply – grows, at best, only arithmetically • (2) David Ricardo (1772 – 1823) • - Theory of ECONOMIC RENT: role of population growth in determining grains prices  determining land rents and real incomes

  20. Malthus & Malthusians • (1) Malthus did not believe that population would continue to grow unchecked: because of • - Providential or Positive Checks: war, famine, disease, etc. (Four Horsemen of Apocalypse) • - Prudential or Preventive Checks: the European Marriage Pattern in controlling fertility (next day) • (2) But most economic historians have adopted a pessimistic Malthusian view: that population growth ultimately halted economic growth • – untilthe Industrial Revolution broke that barrier (from about the 1820s – not before)

  21. Causes of Demographic Changes • (1) Endogenous Factors: working within the economy as a whole • - thus the Malthusian model: population growth → falling real wages & real incomes • - subsistence crises→ demographic crises (as in the Lindert graph) • (2) Exogenous Factors: from the outside: Providential checks of war, famine, disease

  22. Diminishing Returns and the Malthusian Problem: I • 1) The Law of Eventually Diminishing Returns is the proper, correct way of viewing this economic axiom • 2) Consequences of population growth: depend on whether the economy, at the outset of the case study: • - is underpopulated or overpopulated • - in terms of available, land, capital, technology, • 3) When underpopulated, additions of labour to fixed stocks of K (land and capital) led to increasing marginal productivity - • - because labour can be used more efficiently • - through specialization of labour tasks

  23. Diminishing Returns and the Malthusian Problem: II • 4) Diminishing returns set in ONLY AFTER population growth has reached its economically feasible maximum • - even so, note that the marginal product curve descends before the average product curve reaches it maximum output • 5) Subsistence crises will occur only after the average product curve descends further – and crosses the subsistence level (however defined) • 6) Technological changes + additions of new land and capital will check, postpone any such crises

  24. Population growth and the agrarian economy • Suppositions: in following model • 1) Agricultural economy is one of Mixed Husbandry using bothPASTURE for livestock and ARABLE for grain & other crops • 2) More calories per acre - produced from crops (arable) than from livestock (pasture): about 4:1 • 3) Livestock required for food, manure (fertilizer), and power (pulling ploughs and carts) • 4) Population Growth: Arable expands at the expense of pasture lands

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